<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="querryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页列表区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="querryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="querryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <!-- prop="username" -->
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <!-- prop="username" -->
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="setRolesDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
              <!-- 
                v-modl 双向绑定的值
                :key 
                :label 用户所看到的值
                :value 真正选择的值 
              -->
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的属性规则
    let checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        // 邮箱验证通过
        return cb()
      } else {
        cb(new Error('请输入合法邮箱'))
      }
    }
    // 验证手机的属性规则
    let checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        // 邮箱验证通过
        return cb()
      } else {
        cb(new Error('请输入合法手机号'))
      }
    }
    return {
      // 获取用户列表的参数对象
      querryInfo: {
        query: '', // 搜索关键字
        pagenum: 1, // 当前页数
        pagesize: 2 // 当前每页显示几条数据
      },
      userList: [],
      total: 0,
      addDialogVisible: false, // 控制添加用户对话框的显示与隐藏
      addForm: {
        // 添加用户的表单数据
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addFormRules: {
        // 添加表单的验证规则对象
        username: [
          // 校验是否输入
          { required: true, message: '请输入用户名', trigger: 'blur' },
          // 校验是否合法
          {
            min: 3,
            max: 10,
            message: '用户名长度在3-10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码长度在6-15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入手机号', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
      // 控制修改对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则
      editFormRules: {
        email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入手机号', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
      // 控制分配角色对话框的显示与隐藏
      setRolesDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选择的角色Id值
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      let { data: res } = await this.$axios.get('users', {
        params: this.querryInfo
      })
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      console.log('每页显示的数据' + newSize + '条')
      this.querryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      console.log('页码' + newPage)
      this.querryInfo.pagenum = newPage
      this.getUserList()
    },
    // 修改用户状态,监听switched开关状态的改变
    async userStateChange(userinfo) {
      console.log(userinfo)
      let { data: res } = await this.$axios.put(`/users/${userinfo.id}/state/${userinfo.mg_state}`)
      console.log(res)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      } else {
        this.$message.success('更新用户状态成功')
      }
    },
    // 监听添加用户对话框关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮,添加用户
    addUser() {
      // 预检验
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid) // true or false
        if (!valid) return
        // 验证通过,可以发起添加用户的网络请求
        let { data: res } = await this.$axios.post('users', this.addForm)
        console.log(res)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        } else {
          this.$message.success('用户添加成功')
          // 隐藏添加对话框
          this.addDialogVisible = false
          // 重新查询列表数据渲染页面
          this.getUserList()
        }
      })
    },
    // 显示编辑用户的对话框
    async showEditDialog(id) {
      console.log(id)
      let { data: res } = await this.$axios.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户失败')
      } else {
        this.editDialogVisible = true
        this.editForm = res.data
      }
    },
    // 监听修改用户对话框关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      // 预检验用户信息
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          // console.log(valid) //true or false
          // 预检验不通过
          return
        } else {
          let { data: res } = await this.$axios.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败')
          } else {
            this.editDialogVisible = false
            this.getUserList()
            return this.$message.success('更新用户成功')
          }
        }
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      console.log(id)
      // 弹框询问用户是否确认删除数据
      let confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      console.log(confirmResult) // 确定会返回confirm,失败会返回cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      } else {
        let { data: res } = await this.$axios.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        } else {
          this.$message.error('删除用户失败')
          this.getUserList() // 刷新用户页面
        }
      }
    },
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前,获取所有角色的列表
      let { data: res } = await this.$axios.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取角色列表失败')
      } else {
        this.rolesList = res.data
        this.setRolesDialogVisible = true
      }
    },
    // 点击按钮,确认分配角色
    async saveRoleInfo() {
      if (!this.selectRoleId) {
        this.$message.error('请选择要分配的角色')
      } else {
        let { data: res } = await this.$axios.put(`users/${this.userInfo.id}/role`, { rid: this.selectRoleId })
        // console.log(res);
        
        if (res.meta.status !== 200) {
          this.$message.error('更新角色失败')
        } else {
          this.$message.success('更新角色成功')
          this.getUserList()
          this.setRolesDialogVisible = false
        }
      }
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.userInfo = {}
      this.selectRoleId = ''
    }
  }
}

</script>

<style lang="less" scoped>
</style>